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Display a screen saver

Posted on 1999-07-15
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Last Modified: 2010-04-30
I know how the /s and /c parameters work. Is there a way to display a preview of the screen saver in the preview window using VB 6.
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Question by:LSDyeman
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Mirkwood earned 600 total points
ID: 1525115
Use the /p parameter.
The /p parameter is preview


' Check the command line arguments
    ' The command-line argument /p is used to launch the preview box
    If Left(Command$, 2) = "/p" Then
       RunMode = RM_PREVIEW
       start_preview_box

    ' The command-line argument /c is used to launch the screen saver in setup mode
    ElseIf Left(Command$, 2) = "/c" Then
       RunMode = RM_CONFIGURE
       run_configuration

    ' The command-line argument /s is used to launch the screen saver in normal operating mode
    ElseIf Left(Command$, 2) = "/s" Or Command$ = "" And Not App.PrevInstance Then
       RunMode = RM_NORMAL
       start_screensaver
       
     
    ' The command-line argument /a is used to launch the password mode
    ElseIf Left(Command$, 2) = "/a" Then
       RunMode = RM_PASSWORD
       Check_password
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LVL 13

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by:Mirkwood
ID: 1525116
Untested code that I have just sitting here waiting for me to have some time to play with it!

Public Sub PreviewDisplay()
   
  ' this routine displays a form in the little screen saver preview display
  ' note: code based on source by Jeff Hack
     
  ' the preview window handle will be in the right 3 chars of the calling arguments
  Dim Temp%, PrevHWND As Long
     
  ' note we don't show the "Main_Form" here as it tries to maximize itself
  ' against the entire screen and besides a mouse move/key press could end the
  ' display instead of clicking on a button.
     
  PrevHWND = CLng(Right$(Command$, Len(Command$) - 3))
  Temp% = SetParent(PreviewForm.Picture1.hWnd, PrevHWND) 'set active window to the preview window
   
  ' show the graphic in the window, this is a static display but
  ' a active one could be done here
  PreviewForm.Picture1.Left = 0
  PreviewForm.Picture1.Top = 0
  DoEvents        'allow Windows to check for other events
   
  Do While IsWindowVisible(PrevHWND) <> 0 ' wait around until the window dissapears (ok or cancel)
     
    DoEvents  'allow Windows to check for other events
   
  Loop
     
  End
     
End Sub

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Author Comment

by:LSDyeman
ID: 1525117
Sounds good to me. I'll have to try it. If it works, I can send you a copy of my screen saver, if you want.
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LVL 13

Expert Comment

by:Mirkwood
ID: 1525118
I'd like that
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